| 摘要 |
A recalibratable aquarium heater (10), which comprises a containment body (11) for a Joule-effect heating element (12), which is connected to an electric circuit (13) for connection to power supply means, which can be closed and opened by an actuator at a predefined temperature which can be set by the user by way of adjustment means (15) which comprise an indicator (24) of the set temperature, the circuit further comprising a light-emitting element (32) which lights up when current flows in the electric circuit (13). The heater (10) comprises means (27) for the repeatable calibration, on the user's command, of the set temperature indicator (24). The adjustment means (15) further comprise at least one light guide which faces, with a first portion (33) of its surface, the light-emitting element (32) and, with a second surface portion (34) thereof, the outside of the containment body (11), for the remote viewing of the light emitted by the light-emitting element (32). |
